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191)
Moon. And this may suffice, in this Case, concerning the Uncertainties and Errors in the [[underlined]] Latitude [[/underlined]].  For surely they will not venture to conclude, that the apparent Diameter of the Moon was only of twice DC, or equal to 24' 2" 1/2: And, besides, it would be easy to find the contrary for immediate Observation.
11. As to the [[underlined]] Longitude [[/underlined]]; the Errors and Uncertainties might be much greater. For a Star seeming to disappear for a short or insensible Time in M or near N, would really describe the Arc or Curve DO or Do parallel to the Equator very nearly. And so, by a most accurate Calculation, the Star might be eclipsed during about twice the Time which the Moon spends in advancing Eastward from the Star by the Angle CPO or CPo, if the Refraction made in the Moon's Atmosphere might be neglected. And yet, by a real and accurate Observation, the Moon might pass by the Star, without eclipsing it ^ [[insertion]] at [[/insertion]] all near M or N: Or else, the Star might be eclipsed near M or N only for a very short or even insensible Time.
12. Thus, in this Example, by resolving the Spherical Triangle CPO, the Moon might be concluded, by Calculation, to eclipse the Star near S sooner, or to eclipse it in O later, than it might really disappear, or emerge, near M, by almost the whole Time which she spends in describing in her Orbit, by her periodical Motion Eastward

Transcription Notes:
minor edits to make tags and spacing consistent. -megshu